5640947 has 8 divisors (see below), whose sum is σ = 6093360. Its totient is φ = 5191200.

The previous prime is 5640919. The next prime is 5640953. The reversal of 5640947 is 7490465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5640947 - 2⁶ = 5640883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5640917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7697 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (761670).

Almost surely, 2^5640947 is an apocalyptic number.

5640947 is a deficient number, since it is larger than the sum of its proper divisors (452413).

5640947 is a wasteful number, since it uses less digits than its factorization.

5640947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 5640947 is about 2375.0677885063. The cubic root of 5640947 is about 178.0125711780.

The spelling of 5640947 in words is "five million, six hundred forty thousand, nine hundred forty-seven".